Mouldy walls/ ceiling

[Giblets46]

Hi, in my bathroom I have a real problem with mould, I have got extra thick insulation in the attic, I have cavity wall insulation on the outside, but I have got mould all the same, on the ceiling it is a golder brwon kind of colour,a nd on the walls a dark brown/ green. The problem is, that it is not restricted to the 'outside' wall, but all four walls, we try to keep the window open during showering to reduced humdity, but to no avail.

Not sure what paint has been used, but I am pretty sure that it is not specialist bathroom paint, and I have put anti mould cleaner on the wall and ceilings, supposedly stops growth for 6 months, but not for me!
I want to put in a timed extra fan, but after that I am bereft of ideas!
Any ideas out there?
Cheers
Edward

 

[cesca]

u need an extractor fan that stays on for a few minutes after u come out the shower and a fixed air brick in the outside wall. after washing walls down with fungicidle wash apply kitchen & bathroom paint 3 coats. water it down a little coz its like gloss.